How to optimize MapReduce Job?
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What is reduce side join in mapreduce?
Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?
What is Output Format in MapReduce?
What is sqoop in Hadoop ?
Mention Hadoop core components?
Explain about the partitioning, shuffle and sort phase in MapReduce?
what is distributed cache in mapreduce framework?
Clarify what combiners are and when you should utilize a combiner in a map reduce job?
How is reporting controlled in hadoop?
What is mapreduce algorithm?
how indexing in HDFS is done?
What are the various input and output types supported by mapreduce?
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